Springwork.



G. MUELLER.

SPRINGWORK.

APPLICATION FILED JULY 17, 1907. RENEWED NOV. 11, 1910.

Patented June 13, 1911.

w m.. 5 k9 man e err GEORGE MUELLER, OF CHICAGO, ILLINOIS, ASSIGNOR 'IO FRED BARROW, OF CHICAGO, ILLINOIS.

SPRINGWORK.

Application filed July 17, 1907, Serial No. 384,295.

To all whom it may concern:

Be it known that I, GEORGE MUELLER, a

subject of Francis Joseph, Emperor of Austria-Hungary, residing at Chlcago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Springwork, of which the following is aspecificrt-ion, reference being had therein to the accompanying drawing.

My invention relatesto spring-work, and consists in the organizations and arrangements of parts hereinafter described and then pointed out in the appended claim.

In articles of furniture and upholstery as now constructed the spring-work consists of the usual conical springs arranged upon end in rows or banks, and the purpose of the present invention is to simplify and improve this method of springing-up such devices by employing a series of spiral springs extending across the frame or base so that the action of the springs is in the direction of their length or tends to draw them out rather than to compress or contract them against their own resistance.

While the present invention is capable of general use or application in all articles of furniture or' upholstery where spring-work is employed, I illustrate an embodiment thereof by showing the same applied to a chair.

In the accompanying drawings in which like parts have the same reference numerals; Figure 1 is a plan View of a chair employing my invention; Fig. 2 is a longitudinal sectional View on the line 2-2 of Fig. 1; and Fig.v 3is a view on the line 3-3 of Fig. 1 showing the manner of stringing the Wires and-the reinforced strips to which they are hooked.

Inthe drawing legs 4 support the chair body 5, which may be of any suitable form, to which are suitably secured a back 6 and arm posts 7. A seat-frame 8 is mounted upon the body.

Strips of burlap 9, or other suitable material, are secured in any preferred manner to the sides of the back, the seat-frame, the

Specification of Letters Patent.

Patented June 13, 19M. Renewed November 11, 1910. Serial No. 591,870.

all as clearly shown in the drawings. Preferably the strips 9 are folded to inclose a piece of rope 11, or other suitable material, to give greater strength to the strips and to prevent the hooks 12 of the spiral springs 13, which are inserted in the strips and grasp the rope from tearing the same and from being pulled out. The springs are strung across the back and seat frame and their ends hooked in the strips on each side thereof compressing them against their expansive force.

It is to be understood that any number of spiral springs may be used of any required tension, and it is obvious that they may be employed to better advantage than the conical springs heretofore used for like purposes.

It is apparent that any suitable article may be sprung-up or provided with springs of this character, such as sofas, bed-bottoms, seats for automobiles, and that they may be employed in any analogous location without departing from my invention.

Having described my invention I claim Ina chair comprising legs, a body, back, arm-posts and a seat-frame, strips on the back, ar1n-posts and seat-frame, and springs hooked in the strips and strung across the back and seat-frame and connecting the arm-posts with the back.

In testimony whereof I aflix my signature in presence of two witnesses.

GEORGE MUELLER.

ELIZABETH MOLITOR. 

